Patents by Inventor Frank Lea

Frank Lea has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical guides
    Patent number: 4195906
    Abstract: An optical cable comprises at least one optical cable element and, surrounding the optical cable element or elements, a flexible tube of rubber or plastics material, the bore of the tube being of such a transverse cross-section having regard to the transverse cross-section of the optical cable element or to the transverse cross-sections of the optical cable elements that there is at least one elongate space formed between the element or elements and the internal surface of the tube.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: April 1, 1980
    Assignee: BICC Limited
    Inventors: Noel S. Dean, Frank Lea